/Engine/Plugins/Runtime/XRBase/Source/XRBase/Public/HeadMountedDisplayFunctionLibrary.h
Cross XR-System query that returns whether the specified device is tracked or not.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Input|XRTracking") static bool IsDeviceTracking ( const [FXRDeviceId](API\Runtime\HeadMountedDisplay\FXRDeviceId) & XRDeviceId )